import router from './router'
import {resetRouter} from '@/router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'
import Layout from '@/layout'

NProgress.configure({ showSpinner: false }) // NProgress Configuration

const whiteList = ['/login'] // no redirect whitelist
router.beforeEach(async (to, from, next) => {
  // start progress bar
  NProgress.start()
  // set page title
  document.title = getPageTitle(to.meta.title)

  // determine whether the user has logged in
  const hasToken = getToken()
  if (hasToken) {
 
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({ path: '/' })
      NProgress.done()
    } else {
    //   console.log("从哪个路由来:",from.path)
   console.log("到哪个路由去:",to)
    // const menu =sessionStorage.getItem('Menu')
    store.dispatch('user/setButten',to.meta.roles)
    const menu=store.getters.menu
      if (menu) {
        // resetRouter();
        // router.addRoutes(menu);
        // router.options.routes = router.options.routes.concat(menu);//使用了next({ ...to})就不需要再次添加路由了
        next()
      } else {
        try {
          await store.dispatch('user/getInfo').then(function (data) {
            resetRouter();
            router.addRoutes(data);
          
            router.options.routes = router.options.routes.concat(data);
          })
          // next()
          next({ ...to})//使用 next({ ...to}) 能解决二级路由刷新变成空白页的问题
          // next({ ...to,replace: true })
        } catch (error) {
          // remove token and go to login page to re-login
          await store.dispatch('user/resetToken')

           Message.error(error || 'Has Error')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
        }
      }
    
    }
  } else {
    /* has no token*/

    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})

router.afterEach(() => {
  // finish progress bar
  NProgress.done()
})
